LM64440CPPQRYFRQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LM64440CPPQRYFRQ1 is a Texas Instruments automotive-grade synchronous step-down DC-DC converter. It features an input voltage range of 3V to 36V and delivers up to 4A of output current. The device utilizes a fixed 5V output configuration within a 22-VQFN package. Key electrical parameters include a switching frequency of 2.1MHz, a minimum high-side on-time of 50ns, and a junction temperature range from -40°C to 150°C. It supports AEC-Q100 qualification for automotive reliability.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automotive-grade synchronous buck converter with integrated power stage
• Fixed 5V output configuration for simplified design
• High-frequency operation enabling compact passive component selection
• Robust thermal performance suitable for high-temperature environments

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems
• Telematics control units
• Body control modules
• ADAS sensor power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number against official Texas Instruments documentation to ensure correct suffix alignment. Confirm that the CPPQRYFRQ1 designation matches the required package type, temperature grade, and tape-and-reel specifications. Cross-reference the datasheet revision date to validate current manufacturing status and compliance with latest automotive standards before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5V rail is required in automotive applications. The 4A current rating suits moderate load scenarios. Consider the 2.1MHz switching frequency for size constraints. Ensure input voltages remain within the 3V to 36V window. Verify thermal dissipation requirements for the VQFN package under maximum load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM644xx-Q1 family of high-efficiency synchronous buck converters designed for automotive use. These devices offer stackable capabilities and low EMI characteristics. The family supports various output configurations including adjustable and fixed voltages, catering to diverse power distribution needs in modern vehicle architectures.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed direct substitutes are not explicitly listed in the provided source material for this specific fixed-output variant. Consult the official Texas Instruments product selector tool or cross-reference the LM64440 family datasheet for pin-compatible alternatives with matching electrical specifications.